Improvement in summer furnaces



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W. P. SPRINGER Summer Furnaces.

N0. 136,783 PatentedMarchH,18 73 WITNESSES- INVENTOR- I QhaQ/gA AM,PHOTO-LHHOGRAFHIC no N Masenmvsls mums) 2Sheets-Shee t 2 W. P. SPRINGER.

Summer Furnaces.

No, 136,783. PaitentedMarchHJ873.

g g/eats}? IIp/ENTOR. &0? o e 45 @074 ;LINITED STATES P TE T, OFFICE.

WILLIAM P. SPRINGER, OF OSYVEGO, NEWXORK.

' IMPROVEMENT IN SUMMER FURNACES.

Specification forming part of Letters Patent No. 136,783, dated March11, 1873.

To all whom it may concern:

Be it known that I, WILLIAM P. SPRINGER, of Oswego, in the county ofOswego and in the State of New York, have invented certain new anduseful Improvements in Summer Furnaces; and do hereby declare that thefollowin g is a full, clear, and exact description thereof, referencebeing had to the accompanying drawing making apart of thisspecification, in which- Figure 1 is a perspective view of my device asapplied to and used upon an ordinary cooklug-stove, and Fig. 2 is avertical central section of the same upon a line extending from front torear.

Letters of like name and kind refer to like parts in each of thefigures.

The design of my invention is to enable a small amount of cooking to bedone without rendering necessary th e consumption of a large quantity offuel in order to heat, needlessly, the whole of an ordinarycooking-stove; and it consists in the peculiar construction of thedevice, by means of which said objects are attained, substantially as ishereinafter specified.

In the annexed drawing, A and A represent the side plates, B the frontplate, 0 the rear plate, and D the top plate, of a stove containing anoven, E, fuelchamber F, and boilerlioles G, all of usual construction.

Fitted into one of the forward boiler-holes G, and extending above andbelow the top plate D,is acylindrical furnace or supplementalfuelchamber, H, the lower portion'of which corresponds in size toandfills said opening G, while the upper portion of said furnace has aconsiderably larger diameter horizontally, and, extending outward uponsaid top plate, furnishes a support for the device. From the rear side,and near the upper end of the furnace H, its wall is extendedhorizontally rearward, as shown, and, in connection with a top plate, 1,forms a flue, K, which is inclosed at its sides and rear end, and at itsfront end communicatcs with the space within said furnace. A stud, L,extending from the lower side of the bottom flue-plate l1 downward toand upon the top plate D of the stove,.furnishes a support for theextendedportion of said furnace.

\Vithin the rear end of the top plate I is pro vided an opening, M,surmounted by a collar, m, upon which is placed a pipe, N, that, ex-

tending upward and then rearward, enters the exit-flue O of the stove,and furnishes a means whereby the heated escaping products of combustionmay pass from the furnace into said exit-flue. A damper, O, is placedwithin said flue 0 below its connection with said pipe N, so as toenable communication between the for mer and the interior of the stoveto be out 011' when it is desired to use the furnace. The lower end ofthe furnace H, at its inner side, curves inward so as to form a ledge,h, upon which is placed a circular grate, P, that corresponds in size tothe interior of said furnace, and has its lower edge rounded so as tofit into or upon said curved ledge. As thus arranged, the weight of thegrate and of the fuel resting thereon will cause it to maintain ahorizontal position except when it is desired to dump the contents ofthe furnace, in which event a slight upward pressure upon one edge ofsaid grate will cause it to assume the position shown in dotted lines inFig. 2. The addition of a boiler-hole, Q, directly over the center ofthe furnace, and another, Q, over the flue K, completes the device, theoperation of which is as follows:

Suitable fuel is placed upon the grate of the furnace and ignited, andthe air required for the purpose of combustion admitted through andcontrolled by means of the draft-damper of the stove, while the heatedgases, passing rearward through the flue K and upward through the pipe.N, find their way into the chimney through the exit-flue 0, having,during such passage, communicated the usual percentage of their heat tothe top plate of the furnace and to such cooking utensils as are placedwithin or upon the same.

As the capacity of the fire-chamber of the furnace is quite smallabright effective fire can be produced and maintained within the samewith a quantity of fuel so small as to be incapable of ignition, even inthe fuel-chamber of the stove, by which means a very great saving inexpense is effected over the ordinary method of cooking, when the use ofbut one or two boiler-holes is required.

When no longer required for use the contents of the fuel-chamber of thefurnace may be dumped into the stove, said furnace removed from thelatter, and the opening in the pipe or exit flue 0 closed by means of adamper, a, when the stove is ready for nse'in the or dinary manner.

For use in removing the furnace, when heated, suitable perforated lugsor ears R are provided upon its sides and ends.

Having thus fully set forth the nature and merits of my invention, whatI claim as new, is-

1. In combination with the lower end of the furnace H provided with thecurved ledge h,

the grate P having its lower edge rounded,

substantiallyas and for the purpose shown.

-2 i'sea'sa 2. The furnace H provided with the top plate I, the flue K,the exit-flue M and N, the

grate P, and the boiler-holes Q and Q, when said parts are constructedand combined substantially as and for'the purpose set forth.

In testimony that I claim the foregoing I have hereunto set my hand this20th day of January, 1873.

WM. P. SPRINGER. Witnesses: Guo. S. PRINDLE,

EDM. F. BROWN.

